/* 全局CSS变量 */
:root {
  --text-shadow: 0 0 10px rgba(0,229,255,0.7), 0 0 20px rgba(0,229,255,0.5), 0 0 20px rgba(0,229,255,0.3);
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #f1c40f;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --danger-color: #e74c3c;
  --light-color: #ecf0f1;
  --dark-color: #2c3e50;
  --text-primary: #2c3e50;
  --text-secondary: #7f8c8d;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --border-color: #dee2e6;
  --shadow-light: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-medium: 0 4px 8px rgba(0,0,0,0.15);
  --shadow-heavy: 0 8px 16px rgba(0,0,0,0.2);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

/* 全局基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
    /* background-color: rgba(18, 18, 18, 1); */
}

body {
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  font-size: 16px;
}

/* 全局按钮样式 */
.btn-custom {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border: none;
  color: white;
  padding: 12px 24px;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow-light);
}

.btn-custom:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  color: white;
  text-decoration: none;
}

/* 全局卡片样式 */
.card-custom {
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  padding: 1.5rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.card-custom:hover {
  box-shadow: var(--shadow-medium);
  transform: translateY(-2px);
}

/* 全局输入框样式 */
.input-custom {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 16px;
  transition: var(--transition);
  background-color: var(--bg-primary);
}

.input-custom:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* 响应式工具类 */
@media (max-width: 768px) {
  .container-fluid {
    padding: 0 15px;
  }
  
  .btn-custom {
    padding: 10px 20px;
    font-size: 14px;
  }
  
  .card-custom {
    padding: 1rem;
  }
}

/* 文字阴影类 */
.text-shadow-blue {
  text-shadow: 0 0 10px rgba(0,229,255,0.7), 0 0 20px rgba(0,229,255,0.5), 0 0 20px rgba(0,229,255,0.3);
}

/* 动画类 */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-up {
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}